make database and security objects global so we can access them in routes

- use blueprint
- read configuration from file (default_app_config.py) and additional file specified by APPLICATION_SETTINGS environment variable

README.md

@@ -1 +1,9 @@
 Flask-based web interface for user token adminstration of our hackerspace's door lock.
+
+
+# Development
+```shell
+cd tests
+export APPLICATION_SETTINGS=/home/simon/imaginaerraum/door-lock/webinterface/tests/debug_app_config.py
+pytest --cov=../imaginaerraum_door_admin --cov-report=html --cov-report=term
+ ```

imaginaerraum_door_admin/__init__.py

@@ -0,0 +1,170 @@
+import logging
+from flask import Flask
+from flask_sqlalchemy import SQLAlchemy
+from flask_security.models import fsqla_v2 as fsqla
+from flask_security import Security, SQLAlchemyUserDatastore, hash_password
+from email_validator import validate_email
+
+import ldap3
+
+from pathlib import Path
+
+#from .webapp import door_app
+from .door_handle import DoorHandle
+from .auth import ExtendedLoginForm
+
+security = Security()
+db = SQLAlchemy()
+
+
+# create admin users (only if they don't exists already)
+def create_super_admins(app, db, user_datastore, logger):
+    # setup user database when starting the app
+    with app.app_context():
+        new_admin_data = []
+        if app.config['ADMIN_FILE'] is not None:
+            if not Path(app.config['ADMIN_FILE']).exists():
+                logger.warning(
+                    f"Admin user creation file not found at {app.config['ADMIN_FILE']}")
+            else:
+                # store data for new admins in memory s.t. the file can be deleted afterwards
+                with open(app.config['ADMIN_FILE']) as f:
+                    for i, line in enumerate(f.readlines()):
+                        if not line.strip().startswith('#'):
+                            try:
+                                user, email, pw = line.split()
+                                validate_email(email)
+                                new_admin_data.append(
+                                    {'username': user, 'email': email,
+                                     'password': pw})
+                            except Exception as e:
+                                print(
+                                    f"Error while parsing line {i} in admin config file. Config file should contain lines of "
+                                    f"'<username> <email> <password>\\n'\n Exception: {e}\nAdmin account could not be created.")
+
+        db.create_all()
+        super_admin_role = user_datastore.find_or_create_role(
+            'super_admin')  # root admin = can create other admins
+        admin_role = user_datastore.find_or_create_role(
+            'admin')  # 'normal' admin
+        local_role = user_datastore.find_or_create_role(
+            'local')  # LDAP user or local user
+
+        for d in new_admin_data:
+            if user_datastore.find_user(email=d['email'],
+                                        username=d['username']) is None:
+                roles = [super_admin_role, admin_role]
+                if not d['password'] == 'LDAP':
+                    roles.append(local_role)
+                logger.info(
+                    f"New super admin user created with username '{d['username']}' and email '{d['email']}', roles = {[r.name for r in roles]}")
+
+                # create new admin (only if admin does not already exist)
+                new_admin = user_datastore.create_user(email=d['email'],
+                                                       username=d[
+                                                           'username'],
+                                                       password=hash_password(
+                                                           d['password']),
+                                                       roles=roles)
+        db.session.commit()
+
+def setup_logging(app):
+    # set up logging for the web app
+    logger = logging.getLogger('webapp')
+    logger.setLevel(logging.INFO)
+
+    if app.config['LOG_FILE'] is not None:
+        ch = logging.FileHandler(app.config['LOG_FILE'])
+        ch.setLevel(logging.INFO)
+    else:
+        # create console handler and set level to debug
+        ch = logging.StreamHandler()
+        ch.setLevel(logging.DEBUG)
+
+    # create formatter
+    formatter = logging.Formatter(
+        '%(asctime)s - %(name)s - %(levelname)s - %(message)s')
+    # add formatter to ch
+    ch.setFormatter(formatter)
+    # add ch to logger
+    logger.addHandler(ch)
+
+    return logger
+
+def create_app():
+    app = Flask(__name__)
+    app.config.from_object('imaginaerraum_door_admin.default_app_config.DefaultConfig')
+    app.config.from_envvar('APPLICATION_SETTINGS')
+
+    logger = setup_logging(app)
+
+    # do some checks for file existence etc.
+    try:
+        with open(app.config['KEY_FILE']) as f:
+            data = f.readlines()
+            if 'SECRET_KEY' in data[0]:
+                secret_key = data[0].split()[-1]
+            else:
+                raise Exception("Could not read SECURITY_PASSWORD_SALT")
+            if 'SECURITY_PASSWORD_SALT' in data[1]:
+                security_password_salt = data[1].split()[-1]
+            else:
+                raise Exception("Could not read SECURITY_PASSWORD_SALT")
+    except Exception as e:
+        logger.warning(
+            f"Flask keys could not be read from file at {Path(app.config['KEY_FILE']).absolute()}. Exception: {e}. Using default values instead.")
+        secret_key = 'Q7PJu2fg2jabYwP-Psop6c6f2G4'
+        security_password_salt = '10036796768252925167749545152988277953'
+
+    if Path(app.config['TEMPLATE_FOLDER']).is_absolute():
+        if not Path(app.config['TEMPLATE_FOLDER']).exists():
+            logger.error(
+                f"Flask template folder not found at {Path(app.config['TEMPLATE_FOLDER']).absolute()}")
+    else:
+        if not (Path(__file__).parent / app.config['TEMPLATE_FOLDER']).exists():
+            logger.error(
+                f"Flask template folder not found at {(Path(__file__).parent / app.config['TEMPLATE_FOLDER']).absolute()}")
+    if Path(app.config['STATIC_FOLDER']).is_absolute():
+        if not Path(app.config['STATIC_FOLDER']).exists():
+            logger.error(
+                f"Flask static folder not found at {Path(app.config['STATIC_FOLDER']).absolute()}")
+    else:
+        if not (Path(__file__).parent / app.config['STATIC_FOLDER']).exists():
+            logger.error(
+                f"Flask static folder not found at {(Path(__file__).parent / app.config['STATIC_FOLDER']).absolute()}")
+    if not Path(app.config['TOKEN_FILE']).exists():
+        logger.warning(
+            f"Token file not found at {Path(app.config['TOKEN_FILE']).absolute()}")
+
+    # create door objects which provides access to the token file and current door state via MQTT
+    app.door = DoorHandle(token_file=app.config['TOKEN_FILE'], mqtt_host=app.config['MQTT_HOST'],
+                      nfc_socket=app.config['NFC_SOCKET'],
+                      logger=logger)
+
+    # Mail Config
+    #mail = Mail(app)
+
+    # Create database connection object
+    db.init_app(app)
+
+    # Define models
+    fsqla.FsModels.set_db_info(db)
+
+    class Role(db.Model, fsqla.FsRoleMixin):
+        pass
+
+    class User(db.Model, fsqla.FsUserMixin):
+        pass
+
+    from . webapp import door_app
+    app.register_blueprint(door_app)
+
+    ldap_server = ldap3.Server(app.config['LDAP_URL'])
+
+    # Setup Flask-Security
+    user_datastore = SQLAlchemyUserDatastore(db, User, Role)
+    security.init_app(app, user_datastore, login_form=ExtendedLoginForm)
+
+    create_super_admins(app, db, user_datastore, logger)
+
+    return app

imaginaerraum_door_admin/auth.py

@@ -0,0 +1,112 @@
+from wtforms.fields import StringField, BooleanField
+from flask import current_app
+from flask_security import hash_password
+from flask_security.forms import LoginForm, Required, PasswordField
+from flask_security.utils import find_user
+import ldap3
+from ldap3.core.exceptions import LDAPBindError, LDAPSocketOpenError
+
+
+class ExtendedLoginForm(LoginForm):
+    email = StringField('Benutzername oder E-Mail', [Required()])
+    password = PasswordField('Passwort', [Required()])
+    remember = BooleanField('Login merken?')
+
+    def validate(self):
+        # search for user in the current database
+        user = find_user(self.email.data)
+        if user is not None:
+            # if a user is found we check if it is associated with LDAP or with the local database
+            if user.has_role('local'):
+                # try authorizing locally using Flask security user datastore
+                authorized = super(ExtendedLoginForm, self).validate()
+
+                if authorized:
+                    current_app.logger.info(f"User with credentials '{self.email.data}' authorized through local database")
+            else:
+                # run LDAP authorization
+                # if the authorization succeeds we also get the new_user_data dict which contains information about
+                # the user's permissions etc.
+                authorized, new_user_data = validate_ldap(user.username, self.password.data)
+
+                if authorized:
+                    current_app.logger.info(f"User with credentials '{self.email.data}' authorized through LDAP")
+                    # update permissions and password/email to stay up to date for login with no network connection
+                    user.email = new_user_data['email']
+                    user.password = new_user_data['password']
+                    for role in new_user_data['roles']:
+                        user_datastore.add_role_to_user(user, role)
+                    user_datastore.commit()
+                    self.user = user
+                else:
+                    self.password.errors = ['Invalid password']
+        else:
+            # this means there is no user with that email in the database
+            # we assume that the username was entered instead of an email and use that for authentication with LDAP
+            username = self.email.data
+            # try LDAP authorization and create a new user if it succeeds
+            authorized, new_user_data = validate_ldap(username, self.password.data)
+
+            if authorized:
+                # if there was no user in the database before we create a new user
+                self.user = user_datastore.create_user(username=new_user_data['username'], email=new_user_data['email'],
+                                           password=new_user_data['password'], roles=new_user_data['roles'])
+                user_datastore.commit()
+                current_app.logger.info(f"New admin user '{new_user_data['username']} <{new_user_data['email']}>' created after"
+                            " successful LDAP authorization")
+
+        # if any of the authorization methods is successful we authorize the user
+        return authorized
+
+def validate_ldap(username, password):
+    """Validate the user and password through an LDAP server.
+
+    If the connection completes successfully the given user and password is authorized.
+    Then the permissions and additional information of the user are obtained through an LDAP search.
+    The data is stored in a dict which will be used later to create/update the entry for the user in the local
+    database.
+
+    Parameters
+    ----------
+    username :  username for the LDAP server
+    password :  password for the LDAP server
+
+    Returns
+    -------
+        bool : result of the authorization process (True = success, False = failure)
+        dict : dictionary with information about an authorized user (contains username, email, hashed password,
+                roles)
+    """
+
+    try:
+        con = ldap3.Connection(ldap_server, user=f"uid={username},ou=Users,dc=imaginaerraum,dc=de",
+                               password=password, auto_bind=True)
+    except ldap3.core.exceptions.LDAPBindError:
+        # server reachable but user unauthorized -> fail
+        return False, None
+    except LDAPSocketOpenError:
+        # server not reachable -> fail (but will try authorization from local database later)
+        return False, None
+    except Exception as e:
+        # for other Exceptions we just fail
+        return False, None
+
+    # get user data and permissions from LDAP server
+    new_user_data = {}
+    new_user_data['username'] = username
+    new_user_data['password'] = hash_password(password)
+    new_user_data['roles'] = []
+    lock_permission = con.search('ou=Users,dc=imaginaerraum,dc=de',
+                                 f'(&(uid={username})(memberof=cn=Keyholders,ou=Groups,dc=imaginaerraum,dc=de))',
+                                 attributes=ldap3.ALL_ATTRIBUTES)
+    authorized = True
+    if lock_permission:
+        new_user_data['email'] = con.entries[0].mail.value
+    else:
+        authorized = False
+    token_granting_permission = con.search('ou=Users,dc=imaginaerraum,dc=de',
+                                           f'(&(uid={username})(memberof=cn=Vorstand,ou=Groups,dc=imaginaerraum,dc=de))')
+    if token_granting_permission:
+        new_user_data['roles'].append('admin')
+
+    return authorized, new_user_data

imaginaerraum_door_admin/default_app_config.py

@@ -0,0 +1,55 @@
+print("loading default config")
+import bleach
+from flask_security import uia_email_mapper
+
+def uia_username_mapper(identity):
+    # we allow pretty much anything - but we bleach it.
+    return bleach.clean(identity, strip=True)
+
+class DefaultConfig(object):
+    DEBUG = False
+
+    SECRET_KEY = 'supersecret'
+
+    TEMPLATE_FOLDER = 'templates'
+    STATIC_FOLDER = 'static'
+
+    SECURITY_REGISTERABLE = False
+    SECURITY_CHANGEABLE = True
+    SECURITY_RECOVERABLE = True
+    SECURITY_SEND_PASSWORD_CHANGE_EMAIL = False
+
+    SECURITY_POST_LOGIN_VIEW = '/'
+    SECURITY_EMAIL_SUBJECT_PASSWORD_RESET = 'Passwort zurücksetzen'
+    SECURITY_EMAIL_SUBJECT_PASSWORD_NOTICE = 'Passwort wurde zurückgesetzt'
+    SECURITY_PASSWORD_LENGTH_MIN = 10
+
+    SECURITY_USER_IDENTITY_ATTRIBUTES = [
+        {"email": {"mapper": uia_email_mapper, "case_insensitive": True}},
+        {"username": {"mapper": uia_username_mapper}}
+    ]
+
+    # mail configuration
+    MAIL_SERVER = ''
+    MAIL_PORT = 465
+    MAIL_USE_SSL = True
+    MAIL_USERNAME = ''
+    MAIL_PASSWORD = ''
+    MAIL_DEFAULT_SENDER = ''
+
+    SQLALCHEMY_DATABASE_URI = 'sqlite:///admin.db'
+    # As of Flask-SQLAlchemy 2.4.0 it is easy to pass in options directly to the
+    # underlying engine. This option makes sure that DB connections from the
+    # pool are still valid. Important for entire application since
+    # many DBaaS options automatically close idle connections.
+    SQLALCHEMY_ENGINE_OPTIONS = {
+        "pool_pre_ping": True,
+    }
+
+    KEY_FILE = '/root/flask_keys'
+    TOKEN_FILE = "/etc/door_tokens"
+    LDAP_URL = "ldaps://ldap.imaginaerraum.de"
+    NFC_SOCKET = "/tmp/nfc.sock"
+    LOG_FILE = "/var/log/webinterface.log"
+    NFC_LOG = "/var/log/nfc.log"
+    MQTT_HOST = '10.10.21.2'

imaginaerraum_door_admin/templates/admins.html

@@ -27,15 +27,15 @@
         {% endfor %}
         <td>
         {% if not data['super_admin'] %}
-        <a href="{{ url_for('admin_toggle_active', username=data['username']) }}"><img src="static/stop.png" title="Aktivieren/Deaktivieren" alt="Toggle active"></a>
-        <a href="{{ url_for('delete_admins', username=data['username']) }}"><img src="static/delete.png" title="Löschen" alt="Delete"></a>
+        <a href="{{ url_for('door_app.admin_toggle_active', username=data['username']) }}"><img src="static/stop.png" title="Aktivieren/Deaktivieren" alt="Toggle active"></a>
+        <a href="{{ url_for('door_app.delete_admins', username=data['username']) }}"><img src="static/delete.png" title="Löschen" alt="Delete"></a>
         {% endif %}
         {% if data['admin'] %}
             {% if not data['super_admin'] %}
-            <a href="{{ url_for('demote_admin', username=data['username']) }}"><img src="static/demote.png" title="Admin-Rechte widerrufen" alt="Demote"></a>
+            <a href="{{ url_for('door_app.demote_admin', username=data['username']) }}"><img src="static/demote.png" title="Admin-Rechte widerrufen" alt="Demote"></a>
             {% endif %}
         {% else %}
-            <a href="{{ url_for('promote_admin', username=data['username']) }}"><img src="static/promote.png" title="Zu Admin machen" alt="Promote"></a>
+            <a href="{{ url_for('door_app.promote_admin', username=data['username']) }}"><img src="static/promote.png" title="Zu Admin machen" alt="Promote"></a>
         {% endif %}
         </td>
         </tr>
@@ -68,14 +68,14 @@
     </div>
     <div class="p-2 bg-light border">
         <h3>Nutzerdaten sichern:</h3>
-        <form action="{{ url_for('backup_user_datastore') }}" method="get">
+        <form action="{{ url_for('door_app.backup_user_datastore') }}" method="get">
             <input type="submit" value="Download">
         </form>
     </div>
 
     <div class="p-2 bg-light border">
         <h3>Nutzerdaten wiederherstellen:</h3>
-        <form action="{{ url_for('restore_user_datastore') }}" method=post enctype=multipart/form-data>
+        <form action="{{ url_for('door_app.restore_user_datastore') }}" method=post enctype=multipart/form-data>
           <input type=file name=file>
           <input type=submit  value="Abschicken">
         </form>

imaginaerraum_door_admin/templates/base.html

@@ -13,7 +13,7 @@
     <body>
         <nav class="navbar navbar-expand-lg navbar-light bg-light">
             <div class="container-fluid">
-                <a class="navbar-brand" href="{{ url_for('door_lock') }}"><img src="{{ url_for('static', filename='iR.svg') }}" alt="iR Logo"></a>
+                <a class="navbar-brand" href="{{ url_for('door_app.door_lock') }}"><img src="{{ url_for('static', filename='iR.svg') }}" alt="iR Logo"></a>
                 <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarSupportedContent"
                         aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
                     <span class="navbar-toggler-icon"></span>
@@ -29,10 +29,10 @@
                                     Tokens
                                 </a>
                                 <div class="dropdown-menu" aria-labelledby="navbarDropdown">
-                                    <a class="dropdown-item" href="{{ url_for('register') }}">Token Registrierung</a>
-                                    <a class="dropdown-item" href="{{ url_for('list_tokens') }}">Token Übersicht</a>
+                                    <a class="dropdown-item" href="{{ url_for('door_app.register') }}">Token Registrierung</a>
+                                    <a class="dropdown-item" href="{{ url_for('door_app.list_tokens') }}">Token Übersicht</a>
                                     {% if current_user.has_role('super_admin')  %}
-                                        <a class="dropdown-item" href="{{ url_for('token_log') }}">Token Log</a>
+                                        <a class="dropdown-item" href="{{ url_for('door_app.token_log') }}">Token Log</a>
                                     {% endif %}
                                 </div>
                             </li>
@@ -40,7 +40,7 @@
 
                         {% if current_user.has_role('super_admin') %}
                             <li class="nav-item">
-                                <a class="nav-link" href="{{ url_for('manage_admins') }}">Benutzer verwalten</a>
+                                <a class="nav-link" href="{{ url_for('door_app.manage_admins') }}">Benutzer verwalten</a>
                             </li>
                         {% endif %}
 

imaginaerraum_door_admin/templates/index.html

@@ -24,11 +24,11 @@
 {% if current_user.is_authenticated %}
 <div class="row">
      <div class="col-3">
-      <a href="{{ url_for('open_door') }}" class="btn btn-success" role="button">Tür öffnen</a>
+      <a href="{{ url_for('door_app.open_door') }}" class="btn btn-success" role="button">Tür öffnen</a>
     </div>
     <div class="col-1"></div>
     <div class="col-3">
-        <a href="{{ url_for('close_door') }}" class="btn btn-danger" role="button">Tür schließen</a>
+        <a href="{{ url_for('door_app.close_door') }}" class="btn btn-danger" role="button">Tür schließen</a>
     </div>
     <div class="col-5"></div>
 </div>

imaginaerraum_door_admin/templates/register.html

@@ -23,7 +23,7 @@
                 und diesen zustimmt.
             </li>
             <li>Achtung: Der Token funktioniert nicht sofort, sondern muss erst explizit aktiviert werden!
-                Dazu in der <a href="{{ url_for('list_tokens') }}">Token-Übersicht</a> auf das Bearbeiten-Symbol
+                Dazu in der <a href="{{ url_for('door_app.list_tokens') }}">Token-Übersicht</a> auf das Bearbeiten-Symbol
                 (<img src="static/edit.png" title="Editieren" alt="Edit">) klicken und den Haken bei "Aktiv?" setzen.
             </li>
             <li>Jetzt kann der Token verwendet werden.</li>

imaginaerraum_door_admin/templates/tokens.html

@@ -29,9 +29,9 @@
     <td>{{ data[field] if data[field] }}</td>
     {% endfor %}
     <td>
-    <a href="{{ url_for('edit_token', token=t) }}"><img src="static/edit.png" title="Editieren" alt="Edit"></a>
-    <a href="{{ url_for('deactivate_token', token=t) }}"><img src="static/stop.png" title="Deaktivieren" alt="Deactivate"></a>
-    <a href="{{ url_for('delete_token', token=t) }}"><img src="static/delete.png" title="Löschen" alt="Delete"></a>
+    <a href="{{ url_for('door_app.edit_token', token=t) }}"><img src="static/edit.png" title="Editieren" alt="Edit"></a>
+    <a href="{{ url_for('door_app.deactivate_token', token=t) }}"><img src="static/stop.png" title="Deaktivieren" alt="Deactivate"></a>
+    <a href="{{ url_for('door_app.delete_token', token=t) }}"><img src="static/delete.png" title="Löschen" alt="Delete"></a>
     </td>
     </tr>
 {% endfor %}
@@ -47,14 +47,14 @@
     <td>{{ data[field] if data[field] }}</td>
     {% endfor %}
     <td>
-    <a href="{{ url_for('edit_token', token=t) }}"><img src="static/edit.png" title="Editieren" alt="Edit"></a>
-    <a href="{{ url_for('delete_token', token=t) }}"><img src="static/delete.png" title="Löschen" alt="Delete"></a>
+    <a href="{{ url_for('door_app.edit_token', token=t) }}"><img src="static/edit.png" title="Editieren" alt="Edit"></a>
+    <a href="{{ url_for('door_app.delete_token', token=t) }}"><img src="static/delete.png" title="Löschen" alt="Delete"></a>
     </td>
     </tr>
 {% endfor %}
 </tbody>
 </table>
-<form action="{{ url_for('backup_tokens') }}" method="get">
+<form action="{{ url_for('door_app.backup_tokens') }}" method="get">
     <input type="submit" value="Token Daten sichern">
 </form>
 {% endblock %}

imaginaerraum_door_admin/webapp.py

@@ -1,30 +1,22 @@
-from flask import Flask, render_template, request, flash, redirect, session, send_file
+from flask import render_template, request, flash, redirect, session, send_file, Blueprint, current_app
 from werkzeug.utils import secure_filename
 from flask_wtf import FlaskForm
-from wtforms.fields.html5 import DateField, EmailField
+from wtforms.fields import DateField, EmailField
 from wtforms.fields import StringField, BooleanField
 from wtforms.validators import DataRequired, ValidationError, EqualTo
-from flask_sqlalchemy import SQLAlchemy
-from flask_security import Security, SQLAlchemyUserDatastore, auth_required, hash_password, uia_email_mapper, \
+from flask_security import auth_required, hash_password, \
     current_user, roles_required
-from flask_security.models import fsqla_v2 as fsqla
-from flask_security.forms import LoginForm, Required, PasswordField
-from flask_security.utils import find_user
 from flask_security.views import change_password
-from flask_mail import Mail
 from email_validator import validate_email
 
 import json
 import secrets
-import bleach
-import ldap3
-from ldap3.core.exceptions import LDAPBindError, LDAPSocketOpenError
 from pathlib import Path
-import logging
 import tempfile
 
 from datetime import date, datetime, timedelta
-from .door_handle import DoorHandle
+
+from imaginaerraum_door_admin import db, security
 
 
 def validate_valid_thru_date(form, field):
@@ -57,227 +49,16 @@ class AdminCreationForm(FlaskForm):
     name = StringField('Name', validators=[DataRequired()])
     email = EmailField('E-Mail', validators=[DataRequired()])
 
-
-def uia_username_mapper(identity):
-    # we allow pretty much anything - but we bleach it.
-    return bleach.clean(identity, strip=True)
+door_app = Blueprint('door_app', __name__,
+                        template_folder='templates')
 
 
-def create_application(config):
-    # set up logging for the web app
-    logger = logging.getLogger('webapp')
-    logger.setLevel(logging.INFO)
-
-    if config.log_file is not None:
-        ch = logging.FileHandler(config.log_file)
-        ch.setLevel(logging.INFO)
-    else:
-        # create console handler and set level to debug
-        ch = logging.StreamHandler()
-        ch.setLevel(logging.DEBUG)
-    # create formatter
-    formatter = logging.Formatter('%(asctime)s - %(name)s - %(levelname)s - %(message)s')
-    # add formatter to ch
-    ch.setFormatter(formatter)
-    # add ch to logger
-    logger.addHandler(ch)
-
-    # do some checks for file existence etc.
-    try:
-        with open(config.key_file) as f:
-            data = f.readlines()
-            if 'SECRET_KEY' in data[0]:
-                secret_key = data[0].split()[-1]
-            else:
-                raise Exception("Could not read SECURITY_PASSWORD_SALT")
-            if 'SECURITY_PASSWORD_SALT' in data[1]:
-                security_password_salt = data[1].split()[-1]
-            else:
-                raise Exception("Could not read SECURITY_PASSWORD_SALT")
-    except Exception as e:
-        logger.warning(f"Flask keys could not be read from file at {Path(config.key_file).absolute()}. Exception: {e}. Using default values instead.")
-        secret_key = 'Q7PJu2fg2jabYwP-Psop6c6f2G4'
-        security_password_salt = '10036796768252925167749545152988277953'
-
-    if Path(config.template_folder).is_absolute():
-        if not Path(config.template_folder).exists():
-            logger.error(f'Flask template folder not found at {Path(config.template_folder).absolute()}')
-    else:
-        if not (Path(__file__).parent / config.template_folder).exists():
-            logger.error(f'Flask template folder not found at {(Path(__file__).parent / config.template_folder).absolute()}')
-    if Path(config.static_folder).is_absolute():
-        if not Path(config.static_folder).exists():
-            logger.error(f'Flask static folder not found at {Path(config.static_folder).absolute()}')
-    else:
-        if not (Path(__file__).parent / config.static_folder).exists():
-            logger.error(f'Flask static folder not found at {(Path(__file__).parent / config.static_folder).absolute()}')
-    if not Path(config.token_file).exists():
-        logger.warning(f"Token file not found at {Path(config.token_file).absolute()}")
-
-    # create door objects which provides access to the token file and current door state via MQTT
-    door = DoorHandle(token_file=config.token_file, mqtt_host=config.mqtt_host, nfc_socket=config.nfc_socket,
-                      logger=logger)
-
-    app = Flask(__name__, template_folder=config.template_folder, static_folder=config.static_folder)
-
-    # Generate a nice key using secrets.token_urlsafe()
-    app.config['SECRET_KEY'] = secret_key
-    # Bcrypt is set as default SECURITY_PASSWORD_HASH, which requires a salt
-    # Generate a good salt using: secrets.SystemRandom().getrandbits(128)
-    app.config['SECURITY_PASSWORD_SALT'] = security_password_salt
-
-    app.config['SECURITY_USER_IDENTITY_ATTRIBUTES'] = [
-        {"email": {"mapper": uia_email_mapper, "case_insensitive": True}},
-        {"username": {"mapper": uia_username_mapper}}
-    ]
-    app.config['SECURITY_CHANGEABLE'] = True
-    app.config['SECURITY_RECOVERABLE'] = True
-    app.config['SECURITY_SEND_PASSWORD_CHANGE_EMAIL'] = False
-
-    # Mail Config
-    app.config['MAIL_SERVER'] = config.mail_server
-    app.config['MAIL_PORT'] = config.mail_port
-    app.config['MAIL_USE_TLS'] = config.mail_use_tls
-    app.config['MAIL_USE_SSL'] = config.mail_use_ssl
-    app.config['MAIL_USERNAME'] = config.mail_username
-    app.config['MAIL_PASSWORD'] = config.mail_password
-    app.config['MAIL_DEFAULT_SENDER'] = app.config['MAIL_USERNAME']
-    mail = Mail(app)
-
-    app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:///admin.db'
-    # As of Flask-SQLAlchemy 2.4.0 it is easy to pass in options directly to the
-    # underlying engine. This option makes sure that DB connections from the
-    # pool are still valid. Important for entire application since
-    # many DBaaS options automatically close idle connections.
-    app.config["SQLALCHEMY_ENGINE_OPTIONS"] = {
-        "pool_pre_ping": True,
-    }
-
-    # Create database connection object
-    db = SQLAlchemy(app)
-
-    # Define models
-    fsqla.FsModels.set_db_info(db)
-
-    class Role(db.Model, fsqla.FsRoleMixin):
-        pass
-
-    class User(db.Model, fsqla.FsUserMixin):
-        pass
-
-    # LDAP
-    ldap_server = ldap3.Server(config.ldap_url)
-
-    def validate_ldap(username, password):
-        """Validate the user and password through an LDAP server.
-
-        If the connection completes successfully the given user and password is authorized.
-        Then the permissions and additional information of the user are obtained through an LDAP search.
-        The data is stored in a dict which will be used later to create/update the entry for the user in the local
-        database.
-
-        Parameters
-        ----------
-        username :  username for the LDAP server
-        password :  password for the LDAP server
-
-        Returns
-        -------
-            bool : result of the authorization process (True = success, False = failure)
-            dict : dictionary with information about an authorized user (contains username, email, hashed password,
-                    roles)
-        """
-
-        try:
-            con = ldap3.Connection(ldap_server, user=f"uid={username},ou=Users,dc=imaginaerraum,dc=de",
-                                   password=password, auto_bind=True)
-        except ldap3.core.exceptions.LDAPBindError:
-            # server reachable but user unauthorized -> fail
-            return False, None
-        except LDAPSocketOpenError:
-            # server not reachable -> fail (but will try authorization from local database later)
-            return False, None
-        except Exception as e:
-            # for other Exceptions we just fail
-            return False, None
-
-        # get user data and permissions from LDAP server
-        new_user_data = {}
-        new_user_data['username'] = username
-        new_user_data['password'] = hash_password(password)
-        new_user_data['roles'] = []
-        lock_permission = con.search('ou=Users,dc=imaginaerraum,dc=de',
-                                     f'(&(uid={username})(memberof=cn=Keyholders,ou=Groups,dc=imaginaerraum,dc=de))',
-                                     attributes=ldap3.ALL_ATTRIBUTES)
-        authorized = True
-        if lock_permission:
-            new_user_data['email'] = con.entries[0].mail.value
-        else:
-            authorized = False
-        token_granting_permission = con.search('ou=Users,dc=imaginaerraum,dc=de',
-                                               f'(&(uid={username})(memberof=cn=Vorstand,ou=Groups,dc=imaginaerraum,dc=de))')
-        if token_granting_permission:
-            new_user_data['roles'].append('admin')
-
-        return authorized, new_user_data
-
-    class ExtendedLoginForm(LoginForm):
-        email = StringField('Benutzername oder E-Mail', [Required()])
-        password = PasswordField('Passwort', [Required()])
-        remember = BooleanField('Login merken?')
-
-        def validate(self):
-            # search for user in the current database
-            user = find_user(self.email.data)
-            if user is not None:
-                # if a user is found we check if it is associated with LDAP or with the local database
-                if user.has_role('local'):
-                    # try authorizing locally using Flask security user datastore
-                    authorized = super(ExtendedLoginForm, self).validate()
-
-                    if authorized:
-                        logger.info(f"User with credentials '{self.email.data}' authorized through local database")
-                else:
-                    # run LDAP authorization
-                    # if the authorization succeeds we also get the new_user_data dict which contains information about
-                    # the user's permissions etc.
-                    authorized, new_user_data = validate_ldap(user.username, self.password.data)
-
-                    if authorized:
-                        logger.info(f"User with credentials '{self.email.data}' authorized through LDAP")
-                        # update permissions and password/email to stay up to date for login with no network connection
-                        user.email = new_user_data['email']
-                        user.password = new_user_data['password']
-                        for role in new_user_data['roles']:
-                            user_datastore.add_role_to_user(user, role)
-                        user_datastore.commit()
-                        self.user = user
-                    else:
-                        self.password.errors = ['Invalid password']
-            else:
-                # this means there is no user with that email in the database
-                # we assume that the username was entered instead of an email and use that for authentication with LDAP
-                username = self.email.data
-                # try LDAP authorization and create a new user if it succeeds
-                authorized, new_user_data = validate_ldap(username, self.password.data)
-
-                if authorized:
-                    # if there was no user in the database before we create a new user
-                    self.user = user_datastore.create_user(username=new_user_data['username'], email=new_user_data['email'],
-                                               password=new_user_data['password'], roles=new_user_data['roles'])
-                    user_datastore.commit()
-                    logger.info(f"New admin user '{new_user_data['username']} <{new_user_data['email']}>' created after"
-                                " successful LDAP authorization")
-
-            # if any of the authorization methods is successful we authorize the user
-            return authorized
-
-    # we override the change_password view from flask security to only allow local users to change their passwords
-    # LDAP users should use the LDAP self service for changing passwords
-    # this route needs to be defined before the Flask Security setup
-    @app.route('/change', methods=['GET', 'POST'])
-    @auth_required()
-    def change_pw():
+# we override the change_password view from flask security to only allow local users to change their passwords
+# LDAP users should use the LDAP self service for changing passwords
+# this route needs to be defined before the Flask Security setup
+@door_app.route('/change', methods=['GET', 'POST'])
+@auth_required()
+def change_pw():
     if current_user.has_role('local'):
         # local users can change their password
         return change_password()
@@ -285,41 +66,41 @@ def create_application(config):
         # LDAP users get redirected to the LDAP self service
         return redirect('https://ldap.imaginaerraum.de/')
 
-    # Setup Flask-Security
-    user_datastore = SQLAlchemyUserDatastore(db, User, Role)
-    security = Security(app, user_datastore, login_form=ExtendedLoginForm)
 
-    # admin user management
-    @app.route('/manage_admins', methods=['GET', 'POST'])
-    @roles_required('super_admin')
-    def manage_admins():
+# admin user management
+@door_app.route('/manage_admins', methods=['GET', 'POST'])
+@roles_required('super_admin')
+def manage_admins():
     form = AdminCreationForm()
     if request.method == 'GET':
-            users = user_datastore.user_model.query.all()
+        users = security.datastore.user_model.query.all()
         admin_data = [{'username': u.username, 'email': u.email, 'active': u.is_active,
                        'admin': u.has_role('admin'), 'super_admin': u.has_role('super_admin'),
                        } for u in users]
         return render_template('admins.html', admin_data=admin_data, form=form)
     elif form.validate():
-            if user_datastore.find_user(username=form.name.data) is not None or \
-                    user_datastore.find_user(email=form.email.data) is not None:
+        if security.datastore.find_user(username=form.name.data) is not None or \
+                security.datastore.find_user(email=form.email.data) is not None:
             flash("Ein Benutzer mit diesem Nutzernamen oder dieser E-Mail-Adresse existiert bereits!")
-                return redirect('/manage_admins')
         else:
             pw = secrets.token_urlsafe(16)
-                new_user = user_datastore.create_user(username=form.name.data, email=form.email.data,
+            new_user = security.datastore.create_user(username=form.name.data, email=form.email.data,
                                                   password=hash_password(pw))
-                user_datastore.add_role_to_user(new_user, 'local')
-                logger.info(
+            security.datastore.add_role_to_user(new_user, 'local')
+            current_app.logger.info(
                 f"Super admin {current_user.username} created new user account for {new_user.username} <{new_user.email}>")
             flash(f"Ein Account für den Nutzer {new_user.username} wurde erstellt. Verwende das Passwort {pw} um den Nutzer einzuloggen.")
             db.session.commit()
+    else:
+        flash(f"Ungültige Eingabe: {form.errors}")
+
     return redirect('/manage_admins')
 
-    @app.route('/delete_admins/<username>', methods=['GET', 'POST'])
-    @roles_required('super_admin')
-    def delete_admins(username):
-        user = user_datastore.find_user(username=username)
+
+@door_app.route('/delete_admins/<username>', methods=['GET', 'POST'])
+@roles_required('super_admin')
+def delete_admins(username):
+    user = security.datastore.find_user(username=username)
     if user is None:
         flash(f"Ungültiger Nutzer {username}")
         return redirect('/manage_admins')
@@ -338,52 +119,54 @@ def create_application(config):
         # return page asking the user to confirm delete
         return render_template('delete_user.html', username=username, form=form)
     elif form.validate():
-            user_datastore.delete_user(user)
+        security.datastore.delete_user(user)
         flash(f"Benutzer {username} wurde gelöscht.")
-            logger.info(f"Super admin {current_user.username} deleted admin user {username}")
+        current_app.logger.info(f"Super admin {current_user.username} deleted admin user {username}")
         db.session.commit()
         return redirect('/manage_admins')
     else:
         flash("Der eingegebene Nutzername stimmt nicht überein. Der Benutzer wurde nicht gelöscht!")
         return redirect('/manage_admins')
 
-    @app.route('/admin_toggle_active/<username>')
-    @roles_required('super_admin')
-    def admin_toggle_active(username):
-        user = user_datastore.find_user(username=username)
+
+@door_app.route('/admin_toggle_active/<username>')
+@roles_required('super_admin')
+def admin_toggle_active(username):
+    user = security.datastore.find_user(username=username)
     if user is None:
         flash(f"Ungültiger Nutzer {username}")
         return redirect('/manage_admins')
     if user.has_role('super_admin'):
         flash('Super-Admins können nicht deaktiviert werden!')
         return redirect('/manage_admins')
-        user_datastore.toggle_active(user)
+    security.datastore.toggle_active(user)
     if user.is_active:
-            logger.info(f"Super admin {current_user.username} activated access for admin user {username}")
+        current_app.logger.info(f"Super admin {current_user.username} activated access for admin user {username}")
     else:
-            logger.info(f"Super admin {current_user.username} deactivated access for admin user {username}")
+        current_app.logger.info(f"Super admin {current_user.username} deactivated access for admin user {username}")
     db.session.commit()
     return redirect('/manage_admins')
 
-    @app.route('/promote_admin/<username>')
-    @roles_required('super_admin')
-    def promote_admin(username):
-        user = user_datastore.find_user(username=username)
+
+@door_app.route('/promote_admin/<username>')
+@roles_required('super_admin')
+def promote_admin(username):
+    user = security.datastore.find_user(username=username)
     if user is None:
         flash(f"Ungültiger Nutzer {username}")
         return redirect('/manage_admins')
     if user.has_role('admin'):
         flash(f'Benutzer {username} hat bereits Admin-Rechte!')
         return redirect('/manage_admins')
-        user_datastore.add_role_to_user(user, 'admin')
-        logger.info(f"Super admin {current_user.username} granted admin privileges to user {username}")
+    security.datastore.add_role_to_user(user, 'admin')
+    current_app.logger.info(f"Super admin {current_user.username} granted admin privileges to user {username}")
     db.session.commit()
     return redirect('/manage_admins')
 
-    @app.route('/demote_admin/<username>')
-    @roles_required('super_admin')
-    def demote_admin(username):
-        user = user_datastore.find_user(username=username)
+@door_app.route('/demote_admin/<username>')
+@roles_required('super_admin')
+def demote_admin(username):
+    user = security.datastore.find_user(username=username)
     if user is None:
         flash(f"Ungültiger Nutzer {username}")
         return redirect('/manage_admins')
@@ -391,18 +174,19 @@ def create_application(config):
         flash(f'Benutzer {username} hat Super-Admin-Rechte und kann nicht verändert werden!')
         return redirect('/manage_admins')
     if user.has_role('admin'):
-            user_datastore.remove_role_from_user(user, 'admin')
-            logger.info(f"Super admin {current_user.username} revoked admin privileges of user {username}")
+        security.datastore.remove_role_from_user(user, 'admin')
+        current_app.logger.info(f"Super admin {current_user.username} revoked admin privileges of user {username}")
         db.session.commit()
     else:
         flash(f'Benutzer {username} ist bereits kein Admin!')
     return redirect('/manage_admins')
 
-    @app.route('/backup_user_datastore')
-    @roles_required('super_admin')
-    def backup_user_datastore():
+
+@door_app.route('/backup_user_datastore')
+@roles_required('super_admin')
+def backup_user_datastore():
     # get list of defined admin users for backup
-        users = user_datastore.user_model.query.all()
+    users = security.datastore.user_model.query.all()
     user_data = [{'username': u.username, 'email': u.email, 'active': u.is_active, 'password_hash': u.password,
                   'roles': [r.name for r in u.roles]}
                  for u in users if not u.has_role('super_admin')]
@@ -414,9 +198,10 @@ def create_application(config):
     except Exception as e:
         return str(e)
 
-    @app.route('/restore_user_datastore', methods=['POST'])
-    @roles_required('super_admin')
-    def restore_user_datastore():
+
+@door_app.route('/restore_user_datastore', methods=['POST'])
+@roles_required('super_admin')
+def restore_user_datastore():
     # check if the post request has the file part
     if 'file' not in request.files:
         flash('Keine Datei ausgewählt!')
@@ -443,9 +228,9 @@ def create_application(config):
                     entry_valid &= type(d['roles']) == list
                     validate_email(d['email'])
                     if entry_valid:
-                            existing_user = user_datastore.find_user(username=d['username'], email=d['email'])
+                        existing_user = security.datastore.find_user(username=d['username'], email=d['email'])
                         if existing_user is None:
-                                user_datastore.create_user(username=d['username'], email=d['email'],
+                            security.datastore.create_user(username=d['username'], email=d['email'],
                                                        password=d['password_hash'], active=d['active'],
                                                        roles=d['roles'])
                             flash(f"Account für Benutzer '{d['username']} wurde wiederhergestellt.")
@@ -463,38 +248,43 @@ def create_application(config):
     else:
         flash("Ungültige Dateiendung")
     return redirect('/manage_admins')
-    # main page
-    @app.route('/')
-    def door_lock():
-        return render_template('index.html', door_state=door.state, encoder_position=door.encoder_position)
 
-    # token overview
-    @app.route('/tokens')
-    @roles_required('admin')
-    def list_tokens():
-        tokens = door.get_tokens()
+
+# main page
+@door_app.route('/')
+def door_lock():
+    return render_template('index.html', door_state=current_app.door.state, encoder_position=current_app.door.encoder_position)
+
+
+# token overview
+@door_app.route('/tokens')
+@roles_required('admin')
+def list_tokens():
+    tokens = current_app.door.get_tokens()
     assigned_tokens = {t: data for t, data in tokens.items() if not data['inactive']}
     inactive_tokens = {t: data for t, data in tokens.items() if data['inactive']}
     return render_template('tokens.html', assigned_tokens=assigned_tokens, inactive_tokens=inactive_tokens)
 
-    @app.route('/token-log')
-    @roles_required('super_admin')
-    def token_log():
+
+@door_app.route('/token-log')
+@roles_required('super_admin')
+def token_log():
     log = []
     try:
-            with open(config.nfc_log) as f:
+        with open(current_app.config['NFC_LOG']) as f:
             log += f.readlines()
         log.reverse()
         log = [l.split(' - ') for l in log]
         return render_template('token_log.html', log=log)
     except Exception as e:
-            flash(f"NFC logfile {Path(config.nfc_log).absolute()} konnte nicht gelesen werden. Exception: {e}")
+        flash(f"NFC logfile {Path(current_app.config['NFC_LOG']).absolute()} konnte nicht gelesen werden. Exception: {e}")
         return redirect('/')
 
-    # routes for registering, editing and deleting tokens
-    @app.route('/register-token', methods=['GET', 'POST'])
-    @roles_required('admin')
-    def register():
+
+# routes for registering, editing and deleting tokens
+@door_app.route('/register-token', methods=['GET', 'POST'])
+@roles_required('admin')
+def register():
     """Register new token for locking and unlocking the door.
 
     This route displays the most recently scanned invalid token as reported in the logfile and provides a form for
@@ -503,7 +293,7 @@ def create_application(config):
     If the route is called via POST the provided form data is checked and if the check succeeds the /store-token route
     will be called which adds the new token to the database.
     """
-        token = door.get_most_recent_token()
+    token = current_app.door.get_most_recent_token()
 
     recent_token = {}
     if {'token', 'timestamp'}.issubset(set(token.keys())):
@@ -521,7 +311,7 @@ def create_application(config):
         return render_template('register.html', token=recent_token, form=form)
     elif request.method == 'POST' and form.validate():
         # store data in session cookie
-            session['token'] = door.get_most_recent_token()['token']
+        session['token'] = current_app.door.get_most_recent_token()['token']
         session['name'] = form.name.data
         session['email'] = form.email.data
         session['organization'] = form.organization.data
@@ -534,9 +324,10 @@ def create_application(config):
     else:
         return render_template('register.html', token=recent_token, form=form)
 
-    @app.route('/edit-token/<token>', methods=['GET', 'POST'])
-    @roles_required('admin')
-    def edit_token(token):
+
+@door_app.route('/edit-token/<token>', methods=['GET', 'POST'])
+@roles_required('admin')
+def edit_token(token):
     """Edit data in the token file (name, email, valid_thru date, active/inactive).
 
     If the route is accessed via GET it will provide a form for editing the currently stored data for the user.
@@ -552,7 +343,7 @@ def create_application(config):
     form.dsgvo.validators = []  # we skip the validation of the DSGVO checkbox here because we assume the user agreed
     # to it before
     if request.method == 'GET':
-            tokens = door.get_tokens()
+        tokens = current_app.door.get_tokens()
         if token in tokens:
             # set default for form according to values from the token file
             et = tokens[token]
@@ -589,31 +380,33 @@ def create_application(config):
         else:
             return render_template('edit.html', token=token, form=form)
 
-    @app.route('/store-token')
-    @roles_required('admin')
-    def store_token():
+
+@door_app.route('/store-token')
+@roles_required('admin')
+def store_token():
     """Store token to the token file on disk.
 
     This will use the token id and the associated data stored in the session cookie (filled by register_token() or
      edit_token()) and create/modify a token and store the new token file to disk.
     """
     token = session['token']
-        tokens = door.get_tokens()
+    tokens = current_app.door.get_tokens()
     tokens[token] = {'name': session['name'],
                      'email': session['email'],
                      'valid_thru': session['valid_thru'],
                      'inactive': session['inactive'],
                      'organization': session['organization']}
     try:
-            door.store_tokens(tokens)
-            logger.info(f"Token {token} stored in database by admin user {current_user.username}")
+        current_app.door.store_tokens(tokens)
+        current_app.logger.info(f"Token {token} stored in database by admin user {current_user.username}")
     except Exception as e:
         flash(f"Error during store_tokens. Exception: {e}")
     return redirect('/tokens')
 
-    @app.route('/delete-token/<token>', methods=['GET', 'POST'])
-    @roles_required('admin')
-    def delete_token(token):
+
+@door_app.route('/delete-token/<token>', methods=['GET', 'POST'])
+@roles_required('admin')
+def delete_token(token):
     """Delete the given token from the token file and store the new token file to disk
 
     Parameters
@@ -621,7 +414,7 @@ def create_application(config):
     token : str
         The token to delete from the database.
     """
-        tokens = door.get_tokens()
+    tokens = current_app.door.get_tokens()
 
     if token in tokens:
         token_to_delete = tokens[token]
@@ -637,8 +430,8 @@ def create_application(config):
             # form validation successful -> can delete the token
             tokens.pop(token)
             try:
-                    door.store_tokens(tokens)
-                    logger.info(f"Token {token} was deleted from database by admin user {current_user.username}")
+                current_app.door.store_tokens(tokens)
+                current_app.logger.info(f"Token {token} was deleted from database by admin user {current_user.username}")
             except Exception as e:
                 flash(f"Error during store_tokens. Exception: {e}")
             flash(f"Token {token} wurde gelöscht!")
@@ -652,9 +445,10 @@ def create_application(config):
         flash(f'Ungültiger Token {token} für Löschung.')
         return redirect('/tokens')
 
-    @app.route('/deactivate-token/<token>')
-    @roles_required('admin')
-    def deactivate_token(token):
+
+@door_app.route('/deactivate-token/<token>')
+@roles_required('admin')
+def deactivate_token(token):
     """Deactivate access for the given token. This updates the token file on disk.
 
     Parameters
@@ -662,21 +456,22 @@ def create_application(config):
     token : str
         The token to deactivate.
     """
-        tokens = door.get_tokens()
+    tokens = current_app.door.get_tokens()
     if token in tokens:
         tokens[token]['inactive'] = True
         try:
-                door.store_tokens(tokens)
-                logger.info(f"Token {token} deactivated by admin user {current_user.username}")
+            current_app.door.store_tokens(tokens)
+            current_app.logger.info(f"Token {token} deactivated by admin user {current_user.username}")
         except Exception as e:
             flash(f"Error during store_tokens. Exception: {e}")
     return redirect('/tokens')
 
-    @app.route('/backup_tokens')
-    @roles_required('admin')
-    def backup_tokens():
+
+@door_app.route('/backup_tokens')
+@roles_required('admin')
+def backup_tokens():
     # get list of defined admin users for backup
-        tokens = door.get_tokens()
+    tokens = current_app.door.get_tokens()
     try:
         with tempfile.TemporaryDirectory() as tmpdir:
             file = Path(tmpdir, 'token_data.txt')
@@ -685,68 +480,25 @@ def create_application(config):
     except Exception as e:
         return str(e)
 
-    @app.route('/open')
-    @auth_required()
-    def open_door():
 
+@door_app.route('/open')
+@auth_required()
+def open_door():
     try:
-            door.open_door(user=current_user.username)
-            logger.info(f"Door opened by admin user {current_user.username}")
+        current_app.door.open_door(user=current_user.username)
+        current_app.logger.info(f"Door opened by admin user {current_user.username}")
     except Exception as e:
         flash(f'Could not open door. Exception: {e}')
     return redirect('/')
 
-    # routes for opening and closing the door via the web interface
-    @app.route('/close')
-    @auth_required()
-    def close_door():
+
+# routes for opening and closing the door via the web interface
+@door_app.route('/close')
+@auth_required()
+def close_door():
     try:
-            door.close_door(user=current_user.username)
-            logger.info(f"Door closed by admin user {current_user.username}")
+        current_app.door.close_door(user=current_user.username)
+        current_app.logger.info(f"Door closed by admin user {current_user.username}")
     except Exception as e:
         flash(f'Could not close door. Exception: {e}')
     return redirect('/')
-
-    # setup user database when starting the app
-    with app.app_context():
-        new_admin_data = []
-        if config.admin_file is not None:
-            if not Path(config.admin_file).exists():
-                logger.warning(f"Admin user creation file not found at {config.admin_file}")
-            else:
-                # store data for new admins in memory s.t. the file can be deleted afterwards
-                with open(config.admin_file) as f:
-                    for i, line in enumerate(f.readlines()):
-                        if not line.strip().startswith('#'):
-                            try:
-                                user, email, pw = line.split()
-                                validate_email(email)
-                                new_admin_data.append({'username': user, 'email': email, 'password': pw})
-                            except Exception as e:
-                                print(
-                                    f"Error while parsing line {i} in admin config file. Config file should contain lines of "
-                                    f"'<username> <email> <password>\\n'\n Exception: {e}\nAdmin account could not be created.")
-
-        # create admin users (only if they don't exists already)
-        def create_super_admins(new_admin_data):
-            db.create_all()
-            super_admin_role = user_datastore.find_or_create_role('super_admin')  # root admin = can create other admins
-            admin_role = user_datastore.find_or_create_role('admin')  # 'normal' admin
-            local_role = user_datastore.find_or_create_role('local')  # LDAP user or local user
-
-            for d in new_admin_data:
-                if user_datastore.find_user(email=d['email'], username=d['username']) is None:
-                    roles = [super_admin_role, admin_role]
-                    if not d['password'] == 'LDAP':
-                        roles.append(local_role)
-                    logger.info(f"New super admin user created with username '{d['username']}' and email '{d['email']}', roles = {[r.name for r in roles]}")
-
-                    # create new admin (only if admin does not already exist)
-                    new_admin = user_datastore.create_user(email=d['email'], username=d['username'],
-                                                           password=hash_password(d['password']),
-                                                           roles=roles)
-            db.session.commit()
-
-        create_super_admins(new_admin_data)
-
-    return app

requirements.txt

@@ -1,5 +0,0 @@
-flask~=1.1.2
-Flask-Security-Too~=4.0.0
-WTForms~=2.3.3
-paho-mqtt~=1.5.1
-bleach~=3.3.0

setup.cfg

@@ -15,3 +15,35 @@ classifiers =
     Programming Language :: Python :: 3
     License :: OSI Approved :: GNU General Public License v3 (GPLv3)
     Operating System :: OS Independent
+
+[options]
+python_requires = >=3.8
+install_requires =
+    bleach
+    Flask
+    Flask-Mail
+    Flask-Security-Too
+    Flask-SQLAlchemy
+    Flask-WTF
+    email_validator
+    paho-mqtt
+    ldap3
+    wtforms
+
+include_package_data = True
+packages = find:
+setup_requires =
+    wheel
+tests_require = pytest>=3
+zip_safe = False
+scripts= bin/launch_webadmin
+
+[options.extras_require]
+dev =
+    pytest
+    pytest-cov
+    pytest-flask
+    pytest-mock
+    flake8
+    selenium
+    beautifulsoup4

setup.py

@@ -1,17 +1,3 @@
 from setuptools import setup
 
-setup(install_requires=[
-          'bleach',
-          'Flask',
-          'Flask-Mail',
-          'Flask-Security-Too',
-          'Flask-SQLAlchemy',
-          'Flask-WTF',
-          'email_validator',
-          'paho-mqtt',
-          'ldap3',
-      ],
-      include_package_data=True,
-      scripts=['bin/launch_webadmin'],
-      packages=['imaginaerraum_door_admin'],
-      zip_safe=False)
+setup()

tests/conftest.py

@@ -0,0 +1,21 @@
+import pytest
+
+from selenium.webdriver import Chrome
+from imaginaerraum_door_admin import create_app
+
+
+@pytest.fixture(scope='session')
+def app():
+    """Fixture to launch the webapp"""
+    app = create_app()
+
+    return app
+
+
+@pytest.fixture
+def browser():
+    """Fixture for a selenium browser to access the webapp."""
+    driver = Chrome()
+    driver.implicitly_wait(10)
+    yield driver
+    driver.quit()

tests/test_webinterface.py

@@ -0,0 +1,119 @@
+import pytest
+from bs4 import BeautifulSoup
+from imaginaerraum_door_admin.door_handle import DoorHandle
+import re
+
+def test_login(browser, live_server):
+    response = browser.get(f'http://localhost:{live_server.port}')
+
+    assert '<h1>Space Zugangsverwaltung</h1>' in browser.page_source
+
+    response = browser.get(f'http://localhost:{live_server.port}/login')
+
+    email_form = browser.find_element_by_id('email').send_keys('gandalf@shire.me')
+    password_form = browser.find_element_by_id('password').send_keys('shadowfax')
+    submit_button = browser.find_element_by_id('submit').click()
+
+    assert 'Tür öffnen' in browser.page_source
+
+
+def extract_csrf_token(response):
+    soup = BeautifulSoup(response.data)
+    csrf_token = soup.find('input', attrs={'id': 'csrf_token'})['value']
+    return csrf_token
+
+
+def headless_login(client, user='gandalf@shire.me', password='shadowfax'):
+    # extract csrf token from the login page source
+    response = client.get('/login')
+    csrf_token = extract_csrf_token(response)
+
+    # send login information
+    payload = {
+         'csrf_token': csrf_token,
+         'email': user,
+         'password': password
+    }
+    return client.post('/login', data=payload, follow_redirects=True)
+
+
+def test_login_headless(client):
+    response = headless_login(client)
+    soup = BeautifulSoup(response.data)
+
+    # make sure login succeeded -> Tür öffnen button will appear
+    assert any(['Tür öffnen' in link.contents[0] for link in soup.findAll('a', attrs={'class': ['btn'], 'role': 'button'})])
+
+
+@pytest.fixture
+def client_authenticated(client):
+    # log in using admin account for testing
+    headless_login(client)
+
+    yield client
+
+
+def test_open_door_button(client_authenticated, mocker):
+    mocker.patch('imaginaerraum_door_admin.door_handle.DoorHandle.open_door')
+
+    # visit route for open
+    client_authenticated.get('/open')
+
+    # make sure the open method was called
+    DoorHandle.open_door.assert_called_once_with(user='gandalf')
+
+
+def test_close_door_button(client_authenticated, mocker):
+    mocker.patch('imaginaerraum_door_admin.door_handle.DoorHandle.close_door')
+
+    # visit route for open
+    client_authenticated.get('/close')
+
+    # make sure the open method was called
+    DoorHandle.close_door.assert_called_once_with(user='gandalf')
+
+
+def test_manage_admins(client_authenticated):
+    # visit admin management page
+    response = client_authenticated.get('/manage_admins')
+
+    assert "Nutzer Übersicht" in response.data.decode()
+    assert "gandalf" in response.data.decode()
+    assert "gandalf@shire.me" in response.data.decode()
+
+
+def test_create_admin(client_authenticated):
+    # visit admin management page
+    response = client_authenticated.get('/manage_admins')
+    csrf_token = extract_csrf_token(response)
+
+    # post data for creating a new admin
+    payload = {'name': 'bilbo',
+               'email': 'bilbo@shire.me',
+               'csrf_token': csrf_token}
+    response = client_authenticated.post('/manage_admins', data=payload,
+                                         follow_redirects=True)
+
+    # after the new admin user is created, we should have been redirected to the
+    # /manage_admin page. there, the password for login is displayed
+    # we test if the newly created user can log in with that password
+    # extract password displayed on the page
+    match = re.search('Passwort (?P<password>.*) um', response.data.decode())
+    assert match is not None
+    extracted_password = match['password']
+
+    # log out current user
+    response = client_authenticated.get('/logout')
+
+    # try to log in new user using the extracted password
+    response = headless_login(client_authenticated, user='bilbo',
+                              password=extracted_password)
+    # - see if it works
+    soup = BeautifulSoup(response.data)
+
+    # make sure login succeeded
+    # -> username should be displayed
+    assert 'Benutzer <span>bilbo</span>' in soup.decode()
+    # -> Tür öffnen button will appear
+    assert any(['Tür öffnen' in link.contents[0] for link in soup.findAll('a', attrs={'class': ['btn'], 'role': 'button'})])
+